.marginTop80{ margin-top: 80px;}
.main{background-color: #fff; overflow: hidden; min-height: 600px;}
.input-group{ position:relative; width:100%;}
.form-body{ width:400px;margin:80px auto}
.form-control{ border-radius:0;}
.input-group .form-control{ width:80%;}
.input-group label{ float: left; text-align: right; line-height: 30px; width:80px}
.changebutton{width:80%; margin-left: 20%; margin-top:30px;}
.input-group em{ position: absolute;left:410px; top:6px; width:340px; display: none}
.input-group em b{float: left; height: 24px; overflow: hidden; white-space:nowrap; text-overflow:ellipsis; -o-text-overflow:ellipsis;}
.input-group em b{ font-style: normal; display: none;}
.input-group em i{ float: left;padding-right: 4px;}.
@media (max-width:992px) {
    .input-group label{ width:25%;}
    .input-group .form-control{ width:75%;}
    .changebutton{ margin-left: 25%; width:75%;}
}
@media (max-width:550px) {
    .input-group label{ width:35%;}
    .input-group .form-control{ width:65%;}
    .changebutton{ margin-left: 35%; width:65%;}
}
